Success! Looks like we've fixed this one. According to our records the fix was applied for
a bug in our system
a recent build.
Grid reconfigure throughs Null exception
Will through Null exception.
This happends if the grid is reconfigured before it's attached.
Bug or limitation?
A fix for this issue has been committed to SVN.
This fix has been released in beta 4. reconfigure should no longer cause a null pointer exception.
If you continue to notice this problem with this release, please post a reply and I'll continue following up with the team.